<?php

namespace App\Http\Controllers;

use App\Handlers\ImageUploadHandler;
use App\Models\Category;
use App\Models\Topic;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\Http\Requests\TopicRequest;

class TopicsController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth', ['except' => ['index', 'show']]);
    }

	public function index(Request $request, Topic $topic)
	{
		$topics = $topic->withOrder($request->order)->paginate();
		return view('topics.index', compact('topics'));
	}

    public function show(Request $request, Topic $topic)
    {
    	if (! empty($topic->slug) && $topic->slug != $request->slug) {
    		return redirect($topic->link(), 301);
		}
        return view('topics.show', compact('topic'));
    }

	public function create(Topic $topic)
	{
		$categories  = Category::all();
		return view('topics.create_and_edit', compact('topic', 'categories'));
	}

	public function store(TopicRequest $request, Topic $topic)
	{
		$topic->fill($request->all());
		$topic->user_id = \Auth::id();
		$topic->save();
		return redirect()->to($topic->link())->with('success', '成功创建话题');
	}

	public function edit(Topic $topic)
	{
        $this->authorize('update', $topic);
		$categories = Category::all();
		return view('topics.create_and_edit', compact('topic', 'categories'));
	}

	public function update(TopicRequest $request, Topic $topic)
	{
		$this->authorize('update', $topic);
		$topic->update($request->all());

		return redirect()->to($topic->link())->with('message', '修改成功');
	}

	public function destroy(Topic $topic)
	{
		$this->authorize('destroy', $topic);
		$topic->delete();

		return redirect()->route('topics.index')->with('message', '删除成功');
	}

	public function uploadImage(Request $request, ImageUploadHandler $uploader)
	{
		$data = [
			'success' => false,
			'msg'	  => '上传失败!',
			'file_path'=> ''
		];

		if ($file = $request->upload_file) {
			$result = $uploader->save($request->upload_file,'topics', \Auth::id(), 1024);
			if ($result) {
				$data['file_path'] = $result['path'];
				$data['msg'] = '上传成功';
				$data['success'] = true;
			}
		}

		return $data;
	}
}